:root{color-scheme:light;--ink:#211e31;--muted:#696474;--accent:#6943a0;--line:#e6e0eb}*{box-sizing:border-box}body{margin:0;background:#faf8fc;color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header,main,footer{max-width:820px;margin:auto;padding:28px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-size:21px;font-weight:750;letter-spacing:-.5px;text-decoration:none;color:var(--ink)}nav{display:flex;gap:18px;font-size:14px}a{color:var(--accent);text-underline-offset:4px}h1{font-size:clamp(32px,6vw,46px);line-height:1.14;letter-spacing:-1.4px;margin:28px 0 16px}h2{font-size:22px;line-height:1.4;margin:36px 0 10px}p{margin:12px 0}ul{padding-left:24px}.meta,footer{color:var(--muted);font-size:14px}.intro{font-size:18px;line-height:1.6}.card{background:white;border:1px solid var(--line);border-radius:16px;padding:22px;margin:24px 0}.card p:first-child{margin-top:0}.card p:last-child{margin-bottom:0}footer{border-top:1px solid var(--line);margin-top:36px;padding-bottom:48px}@media(max-width:500px){header,main,footer{padding:22px}header{align-items:flex-start;gap:18px;flex-direction:column}nav{gap:14px;flex-wrap:wrap}}